There are several well-known Grandmas tips for cooking with zero loss of minerals, vitamins, antioxidants and energy. Always wash well fruits and vegetables before cutting into pieces and leaf vegetables cooked without adding water. Cover the cooking pan to avoid loss of nutrients. Keep always flame low to minimise energy use and slow cooking. Never use heated or used oil for further cooking. Sauces and ketchups mask the original taste and be avoided to the extent possible. Pot herbs like mint, thyme, celery etc can be sprinkled over cooked items to provide natural appeal and flavour. Highly salted pickles are not desirable for people suffering hyper tension. Many such Grandmas tips are in practice which need to be documented.